just realized: is it perhaps that in the first case, the square brackets are interpreted as a list of parameters to \startformula? 2011/5/12 Julian Becker > I just found out that I cannot (with MkIV on Windows XP, ConTeXt ver. > 2011.02.09 16:42) compile the following > > \starttext > This formula produces an error: > \startformula > [r_{\rm test}]=a > \stopformula > \stoptext > \starttext > However, this works: > \startformula > a=[r_{\rm test}] > \stopformula > > What's going on here? Using \mathrm instead of \rm in the subscript is > compiling without complaint, but produces the wrong output. > > Julian > -- Julian Becker Institut für Angewandte Physik, R.123 Westfälische Wilhelms-Universität Münster Corrensstr. 2/4 48149 Münster / Westfalen Tel. 0251 83-3 61 53 Mob. 0151 599 848 29 e-mail: j_beck16@uni-muenster.de "Keep thy heart with all diligence; for it is the wellspring of life."